National Museum of Nuclear Science & History
John Klein was a member of the Special Engineering Detachment. He worked at the Metallurgical Lab at the University of Chicago and at Los Alamos.
C. D. Wilder worked for the Tennessee Eastman Corporation at the Y-12 Plant.
James B. Snodgrass was a member of the Mounted Military Police working on site security at Los Alamos and the Trinity test site.